3843990 has 64 divisors (see below), whose sum is σ = 10713600. Its totient is φ = 978912.

The previous prime is 3843977. The next prime is 3844019. The reversal of 3843990 is 993483.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5901 + ... + 6519.

It is an arithmetic number, because the mean of its divisors is an integer number (167400).

Almost surely, 2^3843990 is an apocalyptic number.

3843990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3843990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5356800).

3843990 is an abundant number, since it is smaller than the sum of its proper divisors (6869610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3843990 is a wasteful number, since it uses less digits than its factorization.

3843990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 3843990 is about 1960.6095990788. The cubic root of 3843990 is about 156.6489241011.

The spelling of 3843990 in words is "three million, eight hundred forty-three thousand, nine hundred ninety".